Method of manufacturing gasket-lined can ends and apparatus therefor



c. w. GRAHAM.

METHOD OF MANUFACTURING GASKET LINED CAN ENDS AND APPARATUS THEREFOR.

' APPLICATION FILED JUNE 22. 1911.

1,343,914. Patented June 22,1920.

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2i..- 1 I Z0 I mull z WI'A'NESSES: I IN TOR ATTORNEYS C. W. GRAHAM.METHOD OF MANUFACTURING GASKET LINED CAN ENDS AND APPARATUS THEREFOR.

APPLICATION FILED JUNE 22, I917- 1,343,914. Patented June 22,1920.

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! N 1 m 1 I WITNESSES: I NTO ATTORNEYS C. W. GRAHAM.

METHOD OF MANUFACTURING GASKET LINED CAN ENDS AND'APPARATUS THEREFOR.

APPLICATlON FILED JUNE 22, 1917.

1,343,914. f PatentedJune22,1920.

8 SHEETS-SHEET 3.

' IN NTO BY a ATTORNEYS! E c. w. GRAHAM.

METHOD OF MANUFACTURING GASKET LINED CAN ENDS AND APPARATUS THEREFOR.

APPLICATION FILED JUNE 22. I917.

1,343,914. I .PatentedJune22,'I920.-

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I APPLICATION FILED JUNE 22, 1917- 1,343, 914.- PdtentedJune ZZ, 1920.

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. C. W.GRAHAM. METHOD OF MANUFACTURING GASKET'LINED CAN ENDS ANDAPPARATUS THEREFOR APPLICATION HLED JUNE 22. 1917. 1,343,591 4, PatentedJune 22,1920.

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WITNESSES: mv OR ATTORNEYS C. W. GRAHAM.

METHOD OF MANUFACTURING GASKET LINED CAN ENDS AND APPARATUS THEREFOR.APPLICATION FILED JUNE 22. 1911.

' 1,343,914, PatentedJune22,1920.

8 SHEETS-SHEET T.

T INVEI R c. w. GRAH AM. Xv METHOD or MANUFACTURING GASKET LINED CANsuns AND APPARATUS THEREFOR.

APPLICATION FILED JUNE 22. 1917- I PaflnHBdJune22,1920.

j i y :51 702 v WITNESSES Z NV R ATTORNEYS seamed, the liner included insuch seam ren- UNITED STATES PATENT OFFICE.

CHARLES W. GRAHAM, OF ALLENDALE, NEW JERSEY, ASSIGNOR TO AMERICAN CANCOMPANY, OF NEW YORK, N. Y A CORPORATION OF NEW JERSEY.

METHOD OF MANUFACTURING GASKET-LI NED CAN ENDS AND APPARATUS THEREFOR.

the application of the gasket to the flange of a can end to subsequentlyform a packing between the can end and the can body when the end isapplied.-

The invention has a highly im ortant use as applied to vmachines for appying such liners to can ends adaptedto be double dering the closurehermetic without the use of solder.

A principal object-of the present invention is the provision of amachine of this character-in which the gasket liner will be applied toan incompletely formed end, the subsequent completion of the formationof suchend serving to hold the liner in place and insure againstitsbeing damaged in the handling or shipment of the end before applicationto the body and toinsure against misplacement of the liner when the end.is

in the closing machine.

Experience has demonstrated that the smallest percentage of leakage ofthe filled and closed cans results when the liners are so held by theends that the liner may have a slight relative bodily movement about.the

axis of the end when the seaming is tak-' ing place andto'this-end myinvention contem lates the completion of the formation of t e can endafter the liner is'applied to.

- hold it loosely but permanently in place.

A further object of the inventionis the provision of-a machine of thecharacter set forth which will be of high speed and positive operationgiving a finished formation to the can end and thereby insuring anaccurate feeding ofthe ends to the bodies in the closing machine. j

Astill further object of the invention is the provision of a machine foraccurately truing and gagingthe can ends in the final stepsof theapplicationof the liner and just prior to the delivery of the lined endfrom the machine;-

Specification'of Letters Patent. Patent d J une 22 1920 l l Applicationfiledhme 22, 1917. Serial No. 176,269.

' Figure l is a front elevation of the inachine, showing the center andring punches in their down position, and showing a stack of unlined canends '93, a stack of center disks cut"from the gasket material by punchwand a stack of lined can ends103.

,Fig. 2 is a side elevation, looking from the left of Fig. l with allparts'in the same. positions.

Fig. 3 is a rear elevation of Fig. 1 with all parts in same positions.

Fig. 4 is a plan view of Fig. 1.

Fig. 5 is asectional plan View taken on line 5-5 of Fig. 1 looking inthe direction of the arrows.

Fig. 6 is a vertical section taken on line 6-6 of Fig. 2 looking indirection of the arrows, showing in detail the stack of center disks,the thin flexible strip of ga'sket material, the center cutting dies andthe gasket cutting and assembling dies.

Fig. 7 is a vertical sectional view taken along line 7 --7 of Fig. 4showing in detail the feeding'mechanism for placing the un-. lined anduncurled ends into the transporting turret 78, the mechanism being inthe complete forward position.

Fig. 8 isa sectional view along the same line as Fig. 7 but showing thefeed mechanism in the complete out position.

Fig.9 is a vertical sectional view taken along the irregular line 9-9 ofFig. l, but omitting the top part of the machine. This view 'shows themechanism for operating strip of gasket material and part of the maindriving mechanism,

' Fig. 10 is an enlarged sectional view of one of the recesses 7 9 inthe turret 7 8, showing the enlarged portion for receiving the can endsandthe curved face forming the die for curling the-flanges of the canends after lining and the cut out portion for admitting the can ends.

Fig. 11 is a partial vertical sectional view taken along line 11.-11 ofFig. 4 and shows the mechanism for die curling the can ends after thegaskets are placed, this view showing the lifting plunger 102 in itsuppermost position.

Fig. 12 is a similar view to Fig. 11, but with the lifting plunger 102in its lowermost position.

Fig. 13 is a sectional plan view taken on line 1313 of Fig. 2. This linepasses just under the lower face of the turret 78 and shows clearly thesupporting ring 2 and the mechanism underneath.

Fig. 14 is a vertical sectional view on line 14-14 of Fig. 5 showing anenlargement of the gasket'cutting punch 13, die 62, plate 49, turret 78and ring 2. The gasket cutting punch 13 is in its lowermost position andhas just seated a gasket on the flange of the positioned can end.

Fig..15 -is a like sectional vertical View showing the cutting punch 13in its uppermost position, with the-strip of gasket material 55positioned ready to be cut and the turret 78 in transit moving from onestation to the next.

Fig. 16 is a vertical sectional view on line 1616 of Fig. 5 showing thesame recess in the turret and the same lined can end as in. Fig. 14, butpositioned over the lifting plunger 102, which forces the can endvertically against the curling die face to curl the flange over theapplied gasket and loosely hold it in place. The plunger 102 is shown inits uppermost position, the flange of the can end being completelycurled.

Fig. 17 is a sectional view on thesame line as Fig. 16,- but showing thecurling plunger- 102 in its lowermost position clearing the turret 78,the turret being in transit from one position to the next.

On the drawing 1 indicates as an entirety the main frame or casing ofthe machine which maybe of any suitable construction. For illustration,it is shown in 'the nature of a casing 2 which is suitably attached torear upright frames 3. In the upper bearings 4 there is a horizontaldrive shaft-5 to which power is transmitted through the medium of thetight and loose pulleys 6, which pulleys 6 are rotated by some outsidesource of power, in'the direction of the arrow as indicated on Fig. .2.

At fixed points upon the drive shaft 5 are secured'the eccentrics 7 and7 which are connected by suitable eccentric straps 8 and 8 and thepitmen 9 and 9"to the-upper end of the slides 10 and 10'. The slides 10and 10, as is apparent, have a vertically reciprocating motion throughthe guides 11 and 11, which gu-ides are supported by the horizontalmember 12; The member' 12 is in turn, firmly attached by suitable meansto the rear upright frames 3, as is illustrated Secured to one end ofthe'horizontal drive shaft 5 is a miter gear 14, which meshes andtransmits motion to its mate gear 15. The gear 15 is secured to thevertical drive shaft 16, which drive shaft 16 is mounted in the bearings17 and 18 respectively. The bearings 17 and 18 are fastened by. somesuitable means to the upright member 3' as is indicated on Fig. 1. Tothe lower end of the vertical drive shaft 16 is attached a miter gear19, which transmits motion to its mate gear 20, the gear 20 beingsecured to'and transmitting motion to the shaft 21, Fig. 6. The shaft21' has a bearing 22 in the casing 2 shown' clearly on Fig. 6. Attachedto and rotated by the shaft 21 is the spur gear 23. The spur gear member23 is one of a train of spur gears, as 23, 24, and 25 shown plainly onFig. 9. The gear 24, which is driven in the direction of the arrow bythe gear 23, is mounted loose upon a short shaft having. a bearing 26 inthe upright member 3 shown clearly on Figs. 4 and 5.

The gear 25 is mounted on a shaft 27v which s aft 27 has a bearing inthe edestal 28. To the other end of the shaft 27 is is a cam 33, timedto transmit vertical reciprocating motion to a rod member 34, havingsecured at its lowermost end a cam roller 35, which is acted upon by thecam groove in the face of the cam 33. The rod member 34 has a bearing inthe bracket 36 which bracket is secured to the upright member 3 as shownon Fig. 3. The rod member 34 at its upper end is attached to a linkmember 37, which has a fulcrum in a bracket 38, being secured to. theupright member 2 as shown on Fig. 3. The link 37 at its other end has aconnection with a short link 39 which link 39 in turn is connected withthe crank 40. The crank 40 has a fulcrum on the fixed shaft 41 and hasattached to its opposite end a ratchet pawl 42.

'- The pawl 42engages the ratchet wheel 43 as -mounted on two. brackets47 and 48, which are fastened by some suitable means to a plate 49. Thisplate 49 is secured to the top of the casing 2 as shown on Fig. 1. In

the brackets 47 and 48, there is also mounted a shaft 50. At a. fixedpoint on thev shafts 46 and 50 or at distances ual to the width of thepaper web to be ed are mounted Y The gear 65 is mounted upon a verticalshaft 'foiir feed wheels 51; and these feed wheels have fine teeth ontheir peri hery, which, by contact with the ed es of t e paper web asthey are revolved, eed'the web as desiredf Between the feed wheels 51are mounted on the shafts 46 and 50, the rollers, preferably of hardrubber as 52. In conjunction with the feeding devices above mentioned,

there is also mounted in the brackets 47 and 48, a shaft 53 which shaft53 has. mounted on itself another roller 54 similar to roller 52 asshown on Fig. 1. g I

. The paper supply is in the form of ;a roll 55' Fig. 1, which ismounted on a shaft 56 supported in turn by a bracket 57. The bracket 57is secured by some suitable means to the casing 2 as indicated onFig. 1. The paper web 55 is threaded over the idler roller 58, thenceover another roller 59 throu h alinement brackets 60 to the roller 54 anbetween the feed wheels 51 and the rollers 52 and thence to some outsidesource of discharge.

At fixed points in the plate 49 are fastened the center die 61 and thering die 62 as shown on Fig. 6 in section. Under the center die 61 inthe casing 2 is a removable center-stack 63 to which the centers dropafter being punched from the paper Web.

Referring to Fig. 9: On the shaft 31 is mounted a bevel .gear 64 whichmeshes with and transmits motion to a mate gear 65.

66 which shaft 66 has bearings 67 and 68 in the casing 2.

Secured to the upper end of the shaft 66 is a crank disk 69 being partof a Geneva motion. This crank disk has the usual driving roller 70andit also has a locking circle 71 acting upon a star wheel 72. The starwheel 72 is of the usual formand has six slots 73 Fig. 13. The starwheel 72 is secured to and gives motion to a shaft 74. The shaft 74 hasa hearing at its upper end as 75 in the casing 2 Fig. 9, and at itslower end 76 in a pedestal 77, which is attached to the frame 2 Fig. 9.Securedto the upper end of the" shaft 74 is the turret 78. The turrethas six pockets or recessed orifices 79.

Referring to sectional view of one of these orifices, Fig. 10 it will benoticed that from the top down for a certaindistance 0 the pocket has astraight bore. This bore enough to admitua can end having avertiis;large enough to admit a cut ring-to pass. The bottom part of thestraight bore curves outasindicated and graduates to another.

straight bore, which is larger than the. upper one. This lower bore issufliciently large later. The pockets'79 at their lower ends are.slotted radially at 104 to admit the en- The purpose of thetion.

Attached to and revolved by the shaft 66 Fig. 9 is a spur gear 80. Thisspur gear 80 meshes with and revolves a mate gear 81. This gear 81 ismounted upon a bushing 82, which bushing in turn has abearing on thebearing 76'Fig. 9. Directly above the gear 81 is mounted an end feed cam83, which is secured by some suitable means to the gear 81 shown onFigs. 7 and 8.

The end feed cam 83 receives and acts upon a cam roll 84 Figs. 7 and 8.To the cam roll 84 is secured by some suitable means a sliding link 85.The link-85 has a connection at its other end with a lever 86. The link85 also passes through a guide 87 which guide 87 is a part of a bracket88. The bracket 88 is attached to the casing 2. The rod 86 has a fulcrum89 in the bracket 88 and atitsother end 90 is connected with the can endfeed plate 91. The feedplate 91 slides in a slot 92 in the casing 2 andacts upon the edge of the lowermost can end in a stack 93 which issupported by a can end stack arrangement 94 on the casing 2 Fig. 1. Uponthe shaft 66 Figs. 9, 11 and 12 is secured a cam 95 which cam 95 actsupon a lever 96 through the medium of its cam roller 97. The lever 96has a. fulcrum in a bracket 98 which is secured to the casing ..'4. Atthe point 99, the lever 96 has a connection with a curling plunger stem100. The curling plunger stem 100 has a bearing 101 in the casing 2 andat its upper end is fastened to a curling plunger 102. Two enlargedsectional views taken through the curling station are shown as -Figs. 16and 17. Fig. 16 shows the curling top part of the flange evenly inwardat all .points of the circumferencev of the can end,

so that said edge will be curled over and overhang the outer margin of"the ring liner and prevent its escape from the can end; but the base ofthe vertical can end flange is not forced inward against the liner andthe latter is left so as to be capable of. free movement in its seat.

At a fixed point in the casing 2 Fig. 1,

there is"a removable stack 103 to which the lined can ends fall afterlining, and when the stack is completed, it is removed from the machine.

The operation of lows: 1

After a quantity of unlined and uncurled 12s the machine is as fol canends are arranged in the stack 93, the strip of paper 55. is properlythreaded through the feed rollers, the empty stack holders 63 and 103are placed for receiving the center core disks and the completed ends,unfinished ends placed in the stack 93, and the machine is ready tostart. The center core punch 13 and the gasket punch 13 operatesimultaneously each cutting on the same down stroke. The motion of theturret 78 is intermittent and is so timed with the stroke of the punchesthat an orifice is resting under the gasket punch each time the punchdescends. The can end feed mechanism shown in detail in Figs. 7 and 8 istimed to feed a can end into an orifice each time the turret is at rest,the outer lower walls of the orifices 79 being cut away to admit canends as shown at 104 Fig. 10, and by dottedlines in Figs. [and 5. Thestrip'or web of aper is timed to feed forward a step at tie same timethe turret is rotated a step, so that each is at rest at the same time.J

There is a space of three cuts between the punch that cuts the centersout and the gasket punch, this separation being necessary to give ampleroom for the turret 78. lhe turret 78 rests in a recess in the top ofthe bed 2 its lower edge being covered by a ledge which acts to confineand hold the can ends central with the recessed orifices after passingthrough the cut out portions 104.

The four operating stations on the turret are designated by letters, a,b, c, andd. "While the turret is at rest, a can end is fed into a recess79 at a, a gasket liner is cut and deposited on a can end flange at Z),a can end with gasket applied is curled at 0, a can end is dropped ontoa stack at d and a center disk. is cut from the Web at e. As the punches13 and 13 ascend, the paper is fed forward one step and the turret ismoved ahead one step, when the sequence of operationsis repeated.

A. very important feature of this machine lies in-the curling of the canend flange by die action. Prior to my invention, this curling was doneby rollers in some form, and it has been found that quite a variationexistsin the curl, as to extent of curl, and the overall diameter of theends after curling. While, where the ends are die curledby bending theentire edge of the flange at once, instead of progressively as :is thecasewith rollers, the metal seems to take a set that produces can endshaving I infinitesimal differences in diameter am? extent of curl, andit has been found by experiment that the more nearly alike the curlededges are, the easier it is to produce perfect hermetic double seams.

It will be manifest from the foregoing that the-end when it receives thegasket liner is in unfinished condition,that is to since all parts ofthe edge are positively bent in simultaneously.

It is thought that the invention and many of its attendant advantageswill be understood from the foregoing description, and 'it will beapparent that various changes may be made in the form, constructionandarrangement of the parts without departing from the spirit and scope ofthe invention or sacrificing any of its material advantages, the formhereinbefore described being merely a preferred embodiment thereof.

I claim: I I

1. In a machine for cutting can end liners from thin, flat material andassembling the same with shouldered and flanged can ends, thecombination of cutting members, means for advancing liner formingmaterial be tween said cutting members, mechanism for actuating saidcuttin gasket liner from said material and apply the same directly on tothe flange of the can ends at the cutting station and means for curlingthe edges of said can ends simultaneously at all points of theircircummembers to cut a ference to loosely inclose the applied liners. y,

2. In a machine-for applying can end liners to can ends, the combinationof mechanism for assembling gasket liners upon the flanges of said canends, and die means embracing the periphery of the can end andindependent of and cooperating with said assembling mechanism forinturning the flange edge ofsaid can end simultaneously at all points toloosely confine and retain said gasket liners within the recess formedby the inturning of said edge.

3. In a machine for assembling gasket liners with can ends, thecombination of f'means for fprming gasket liners and assembling themwith the can ends, and die means independent of and cooperating withsaid assembling mechanismengaging simultaneously the entire edge ofthe-flange of a can end and inturning the same to loosely secure saidgasket liner toxsaid can end.

4; In a machine for cutting can end liners from thin, flat material andassem-- bling the same with shouldered and flanged memcan ends, thecombination of cuttin bers, means for advancing liner forming materialbetween said cutting members, mechanism for actuating said cuttingmembers to cut a gasket liner from said material and apply the samedirectly on to the flange of the can ends'at the-cuttin station andmeans for curlin the edges 0 said can ends to loosely inc osethe appliedliners, said curling means comprising a pressure element which ismovable in a line parallel with the movement of said gasket-applyingmeans.

5. In a machine for cutting can end liners from thin, flat material andassembling the a same with shouldered and flanged can ends,

the combination of cutting members, means for advancing liner formingmaterial between said cutting members,mechanism for actuating saidcutting members to cut a gasket liner from said material and apply thesame directly on to the flange of the can ends at the cutting stationand means for curling the edges of said can ends to loosely inclose theapplied liners, said curling means comprising a pressure element whichis movable in a line parallel with and opposite to the movement of saidgasket-applying means. j 6. In a machine'for applying gasket liners tocanends, the combination of cutters adapted .to cut a ring liner fromsuitable linermaterial and apply same to the flange of an unfinished canend, a die for finishing the formation of said end and inclosing theedge of the gasket within theedge of the flange, and means for causingsaid die to act with pressure in the direction of the longitudinal axisof the can end.

7. The combination of an intermittently rotatable turret having orificesadapted to receive and transport flanged and uncurled can ends, saidorifices being formed with flange curling die surfaces, means forintermittently feeding a web of paper past said "--orifices at a ringliner cutting station, means at said stationcooperating with saidorifices can ends to said guides and to said position, and means formoving the can ends against 'end which is in line for cutting ringliners and depositing them in said can ends, means for feeding can endsto the orifices of the turret, and means for moving the can ends againstsaid die sur- -faces after they have recelved said rlng liners tothereby cause the flanges of the can ends to retain the ring liners. 4

8. The combination of an intermittently rotatable turret having orificesadapted to receive andtransport flanged and uncurled can, ends, saidturret being formed with flange curling die surfaces and can end guidesleading to a position for the can with said orifices and die surfaces,means for orifices at a ring liner cutting station, means at saidstation cooperating with said orifices for cutting rin liners anddepositing them in said can ends, means for feeding said die surfacesafter they have received said ring liners. v

'9. The combination of an intermittently rotatable turret havingorifices adapted toreceive and transport flanged and uncurl'ed can ends,said orifices being formed at their intermit tently feeding a web ofpaper past said against said die surfaces after they have received saidring liners.

10. The combination of an intermittently rotatable turret havingorifices adapted to receive and transport flanged and uncurled can ends,said orifices being formed at their under sides with flangecurling diesurfaces,

means for intermittently feeding a web of paper over said orifices at aring liner cutting station, means at said station cooperating with saidorifices for cutting ring liners and depositing them in said can ends,core cutting means operating on said web in advance of the operation ofthe ring liner cutting means, means for feeding can ends to the orificesof the turret, and means for elevatin the can ends against said diesurfaces a 'ter they have received said ring l1ne'rs.' i

11/ The combination of a di'ehaving a pocket adapted to hold a can endformed with a peripheral longitudinal flange, means for depositing insaid pocket a can end and a ring liner on said can end within saidflange, said pocket being formed with a peripheral curved die surfaceadaptedto curl said flange inward, and means for causing pressurebetween the said flange of the can end and the said die surface.

12. In a can end lining machine, the combination of a die having *apocket adapted to receive afla-nged can end and a ring liner superposedthereon, said pocket having a curved die surface which overhangs andopposes the peripheral edge of the can end, means for feeding a can endand a ring liner successively to said pocket, and means for causingendwise curling pressure between the said flange and the said diesurface.

13. The combination of a. carrier having pockets adapted to hold canends formed with a peripheral longitudinal flange, means for depositingring liners on said can ends within said flange while the can ends arein 14. The combination of aturret having an intermittent movementandjpockets adapted to-hold can'ends formed with a peripherallongitudinal'flange, means for depositing ring liners on said can endswithin said flange while the can ends are in said pockets, said pocketsbeing formed with a peri heral curved die surface adapted to our saidflange inward, and means for causing pressure between the said flange ofthe can end and the said die surface.

15. The combination of a die having a pocket adapted to hold a can endformed with a peripheral lon itudinal flange, means for depositing insai pocket a can end and a ring liner on said can end within saidflange, said pocket being formed with a peripheral curved die surfaceadapted to curl said flange inward, means for causing pressure betweenthe said flange of the can and the said die surface, ring linerformingmechanism arranged to deliver ring liners successively to said pocket,and means for delivering can ends successively to said pocket. a i

16. In a can end lining machine, the \combination of a die having apocket adapted to receive a flanged can end and a ring liner superposedthereon, said pocket having a curved die surface which overhangs andopposes the peripheral edge of the can end, means for causing endwisecurling pressure between the said flange and the said die surface, ringliner forming mechanism arranged to deliver ring liners successively tosaid pocket, and means for delivering can ends successively to saidpocket.

17. The combination of a carrier having pockets adapted to hold can endsformed with a peripheral longitudinal flange, ring liner formingmeansarranged for depositing ring liners on said can ends within said flangewhile the can ends are in said pockets, said pockets being formedwith aperipheral curved die surface adapted to curl said flange inward, andmeansfor causing pres-' sure between the said flange of. the can end andthe said die surface.

18. The combination of a turret having an intermittent movement andpockets adapted to hold can ends formed with a pcripheral longitudinalflange, ring liner forming means for depositing ring liners on said canends within said flange while the can ends are in said pockets, saidpockets being formed with a peripheral curved die surface adapted tocurl said/"flange inward, means for causing pressure between the saidflange of the can end and the said die'surface, and means for feedingcan ends to said pockets.

19. Ina machine for lining can ends, the

combination of an apertured die member having a can end edge curling dieportion arranged peripherally in the aperture, a plunger for operatingin line with said aperture, means for causing relative movement betweensaid member and plunger to curl the flange edge of a can end by means ofsaid die portion, means for placing ring liners into said aperture andonto the flange of said can end in a direction opposite to the operativemovement of said plunger before the curling operation of the die, andmeans for feeding can ends into position between said die portion andsaid plunger.

20. A method of manufacturing a gasket lined can end, consisting in theprovision of an unlined and flanged can end, cutting a gasket liner fromflat material, placing said can end and gasket liner in desiredrelation' with the liner on said flange, and completing the formation ofsaid end to secure said liner thereto by inturningall parts of theextreme edge of said e'nd simultaneously by pressure applied directly onsaid ed e, and tosuch limited extent as to leave t e inturned edge outof contact with the gasket liner.

21. A method of manufacturing a gasket lined can end, consisting in theprovision of an unlined and flanged can end, cutting a gasket liner fromflat material, placin said can end and gasket liner in desired re ationwith the liner on said flange, and completing the formation of said endto secure said liner thereto by inturning all parts'of the having anupstanding flange by pressure in the direction of the axis of the canend and liner, and thereafter inturning the extreme edge of theupstanding flange of the can end by pressure also in said axialdirection and to such limited extent as to leave the ring liner looseand movable within said inturned flange, and thereby confining the linerloosely withinthe flange of the can end.

Signed. i

CHARLES W. GRAHAM.

